<?xml version="1.0" encoding="utf-8"?><mads xmlns="http://www.loc.gov/mads/" xmlns:mods="http://www.loc.gov/mods/v3" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.loc.gov/mads/
mads.xsd"><authority><topic authority="http://AATesaurus.cultura.gencat.cat/aat/getty_en">subject headings</topic></authority><related type="broader"><topic>controlled vocabularies</topic></related><variant type="other"><topic>subject heading</topic></variant> <note xml:lang="en"><![CDATA[ Access points to a bibliographical record based upon subject terminology, usually from a standardized or controlled vocabulary. Subject headings are words or phrases; pre-coordination of terminology is a characteristic of subject headings, meaning that they combine several unique concepts together in a string (e.g., "Medieval bronze vessels" combines a period, material, and work type in one heading).  ]]></note></mads>